<?php
/*
 * Copyright (c) 2013 Eugene Kuzmenko
 *
 * Permission  is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in  the Software without restriction, including without limitation the rights
 * to  use,  copy,  modify,  merge, publish, distribute, sublicense, and/or sell
 * copies  of  the  Software,  and  to  permit  persons  to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The  above  copyright  notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE  SOFTWARE  IS  PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED,  INCLUDING  BUT  NOT  LIMITED  TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS  FOR  A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS  OR  COPYRIGHT  HOLDERS  BE  LIABLE  FOR  ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *
 * For more information, see <http://www.aljey.com>.
 */

namespace Al\Style\Lib;

use Al\Core\Lib\Service,
    Al\Style\Lib\Menu\Link,
    Al\Style\Lib\Menu\Menu;

/**
 * HTML breadcrumbs.
 *
 * @author Eugene Kuzmenko <mail@aljey.com>
 */
class Breadcrumbs extends Link {

  /**
   * @var Menu A main menu instance.
   */
  protected $menu;

  /**
   * Constructor
   */
  public function __construct() {
    $this->menu = Service::get('main_menu');
  }

  /**
   * @return string
   */
  public function __toString() {
    $response = Service::get('config.main_menu.enabled') ?
      $this->getHTML($this->menu) : '';
    return strlen($response) ? '<ol class="breadcrumb">' . $response . '</ol>' :
      '';
  }

  /**
   * Recursively builds breadcrumb links.
   *
   * @param Menu $menu
   * @return string
   */
  protected function getHTML(Menu $menu) {
    foreach ($menu as $item) {
      if ($item->isActive()) {
        if ($item->match()) return '<li class="active">' . $item->getTitle() .
          '</li>';
        return '<li><a href="' . $item->getUrl() . '">' . $item->getTitle() .
        '</a></li>' . $this->getHTML($item->getMenu());
      }
    }
    return '';
  }

} 